The new rule could hurt sales of high-calorie foods at restaurants likeThe Cheesecake Factory, Buffalo Wild Wings, and IHOP, which serve some of the unhealthiest meals in America, according to a report by the Center for Science in the Public Interest.

Among the nation’s most unhealthy meals is a 16-ounce prime rib from Texas Roadhouse served with a loaded sweet potato and Caesar salad for a total of 2,820 calories.

Chain restaurants nationwide are required to list calories on all menus and menu boards starting this week.

The new rule, which is part of the 2010 Affordable Care Act, could hurt sales of high-calorie foods.

That’s bad news for restaurants like The Cheesecake Factory, Buffalo Wild Wings, and IHOP, which serve some of the unhealthiest meals in America, according to a report by the Center for Science in the Public Interest.

For the center’s annual “Xtreme Eating” list, its nutrition experts reviewed menus at 200 restaurant chains in the US to find the meals heaviest in calories, saturated fat, sodium, and sugar.

Consuming this sandwich with a side of fries is the equivalent of eating five Burger King bacon double cheeseburgers, according to the report. It has 53 grams of saturated fat and 4,700 milligrams of sodium.

Dave & Buster’s: Carnivore pizzadilla (1,970 calories)

This pie is a hybrid between a quesadilla and pizza. It is stuffed with Manchego and cheddar cheeses, pepperoni, and Italian sausage, then topped with even more pepperoni and Italian sausage, plus bacon, marinara, and mozzarella and Parmesan cheeses.

The combo with the sausage, the “crispers” (with honey mustard sauce), and the Texas dry-rub ribs with sides of roasted street corn, homestyle fries, chile-garlic toast, and garlic dill pickles has 41 grams of saturated fat and 7,610 milligrams of sodium, which is more than three times the daily recommended sodium limit.

The meat in this dish is 1,570 calories and the loaded sweet potato – which is topped with marshmallows and caramel sauce – is 770 calories. The meal has 72 grams of saturated fat, 5,330 milligrams of sodium, and 51 grams of added sugar.